Hitachi EH-D6EAN - Communication Cable Connection

Chapter 2 Specifications
2 – 46
2.20.5 Communication cable connection
The following figure shows the communication cable connection example. Be sure to use shielded twisted pair
cable.
[OBV-NES]
MICRO-EHV+
OBV-NES
Terminal
resistor
120Ω
(1/2W)
[5] SP
[6] SN
[4] SG
MICRO-EHV+
OBV-NES
[5] SP
[6] SN
[4] SG
Terminal
resistor
120Ω
(1/2W)
MICRO-EHV+
OBV-NES
[5] SP
[6] SN
[4] SG
[OBV-485A]
The example of the cable connection of RS-422 I/F is shown below.
SG
RD–
RD+
SD+
SD–
MICRO-EHV+
OBV-485A
Termination
resistor
120Ω
(1/2W)
[1] SG
[4] SDP
[5] SDN
[6] RDN
[7] RDP
[8] TERM
[1] SG
[4] SDP
[5] SDN
[6] RDN
[7] RDP
[8] TERM
Peripheral device
MICRO-EHV+
OBV-485A
The example of the cable connection of RS-485 I/F is shown below.
SG
SN(-)
SP(+)
MICRO-EHV+
OBV-485A
Termination
resistor
120Ω
(1/2W)
[1] SG
[4] SDP
[5] SDN
[6] RDN
[7] RDP
[8] TERM
[1] SG
[4] SDP
[5] SDN
[6] RDN
[7] RDP
[8] TERM
Peripheral device
MICRO-EHV+
OBV-485A
[OBV-485TAI/485TAO]
The example of the cable connection of RS-485 I/F is shown below.
MICRO-EHV
OBV-485TAI/485TAO
Termination
resistor
120Ω
(1/2W)
Peripheral device
MICRO-EHV
OBV-485TAI/485TAO
[1] SDP
[2] SDN
[3] TERM
[4] SG
[1] SDP
[2] SDN
[3] TERM
[4] SG
SDP
SDN
SG